We are new to incubating and on day 13. Our temp has been steady around 99.5 and we have been using 2 additional thermometers to make sure. For some reason tonight the 2 inside the incubator jumped to 106 while the one attached says between 99.5 to 100. What can we do to verify this I am worried it's hurting the babies. We have a farm innovators model 4250 incubator.